Once every century?
A century means one hundred consecutive years, and adjective form is centennial. The adverb form centennially is rarely used.
Several hundred million years ago, when animals communicated by using sound.Several hundred million years ago, when animals communicated by using sound.Several hundred million years ago, when animals communicated by using sound.Several hundred million years ago, when animals communicated by using sound.
No. Three hundred years too soon.
It could be. But most likely not. In a hundred years the odds are we will find a better fuel to use or everything will be powered by electricity.
They had guns then. So they used those.
25.
What figure of speech has the writer used in the sentence The AIDS crisis is the greatest Holocaust in the last one hundred years'?
Since yesterday and a few hundred years before that.
The cigar
Yes. Normally a hurricane name can be re-used once every six years.
Werowocomoco was the headquarters of the leader, Powhatan. It was used by Indians for several hundred years before English Settlers came.
up until a few hundred years ago...when the clock was invented.